Machine for grinding bearings.



No. 697,500. Patented Apr. I5, 1902.

H. LA CASSE.

. MACHINE FOR GRINDING BEARINGS.

rA umibn filed Jan. 9, 1901.

2 Sheets-Sheet I.

(No Model.)

1w: urinals PETERS cowuoroumnu mswmown. u. c.

No. 697,500; Patented Apr. I5, I902.

H. LA GASSE.

MACHINE FOR GRINDING BEARINGS.

(Application filed Jan. 9, 1901.)

2 Sheets-Sheet 2.

(No Model.)

INVENTOR BY aw kvqfl w I I .I IIIIIIII I I ATTORNEY WITNESSES:

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UNITED STATES PATENT ()FFIcE.

HENRY LA CASSE, OF AUBURN, NEW YORK.

MACHINE FOR GRINDING BEARINGS.

SPECIFICATION forming part of Letters Patent No. 697,500, dated April15, 1902.

Application filed January 9, 1901. Serial No. {12,608. (No model.)

To all whom it may concern;

Be it known that I, HENRYLA GAssn, a citizen of the United States, and aresident of the city of Auburn, in the county of Cayuga and State of NewYork, have invented certain new and useful Improvements in Machines forGrinding Bearings, of which the following is a specification.

' My invention consists in certainimprovements in grinding-machines forball-'bearin gs.

In the drawings, Figure 1 is a plan of a machine containing myimprovements. Fig. 2 is a side view thereof, the work-holding standardbeing removed. Figs. 3 and 4. are side and front views of thework-standard, Fig. 4 being partly in section upon the line w y of Fig.3. Fig. 5 shows a form of bearing which the machine is intended togrind. Fig. 6 is a detail of one of the eccentrics for moving thedriving-shaft to or from its operative position, and Fig. 7 showsrelations between the work and cup-wheel.

Similar reference-letters indicate like parts in the several figures.

A is the bed or frame of the machine, furnished with sliding ways B Bupon which is supported the base B, which carries the swinging table 0,which is pivotally secured at D, so as to permit it to be swunghorizontally, as is indicated by dotted lines in Fig. 1. The table 0 isadjustable lengthwise by sliding upon a base 17 being controlled by thehand-wheel b and is adjustable cross- Wise by sliding upon a base B,being controlled in this operation by the hand-wheel 21 It carries thecup-shaped emery-wheel E, having a substantially V-shaped rim, whoseshaft 6 is supported in bearings ff and receives power from the pulley gby means of the friction-pulleys g g, which engage it. Thefriction-pulleys g g are supported in bearingsf f which are furnishedwith eccentric sleeves or camsf f which are controlled by a handle h togive the shaft 9 a slight movement to or from the shaft e, whereby theWheel E is started or stopped, as desired. Fig. 6 shows the details ofone of the cams. A lock 0 serves to secure the swinging table in itsadjusted position. Another baseF supports another grinding wheel G,being furnished witha sliding carriage F, controlled by the hand-serew hand furnished positions which this slide may occupy. At

the upper end of this carriage M the bearing L is secured by a suitablechuck it n, which is mounted in the bearings 17. n and is actuated bymeans of the pulley n from the pulley 02 upon the shaft P. This shaftreceives power from its pulley P. The feed-shaft r for the base B isactuated by the gear-train r r r and moves the base 13 lengthwise theways B B as desired.

The operation of the machine is as follows: The bearing being secured inplace in the chuck n n is rotated at comparatively slow speed. Theoutside surface 3, Figs. 5 and 7,

is ground by the wheel G, while the carriage B, moving lengthwise theframe A during the operation, causes the wheel G to operate equally atall points of such surface. At the same time the cup-wheel E, beingswung into operative position, as shown by dotted lines in Fig. 1,grinds the surfaces 8 5 which are the points of engagement with theballs when in use. Adjustments for different diameters of bearing areobtained by shifting the position of the wheel G by means of thehandscrew h, and the cup-wheel E is adjusted for this purpose byshifting its supporting-table 0 upon its slides crosswise by the wheel band lengthwise bythe wheel if. The angular adjustment of the cup-wheel Eto the work is effected by swinging the table 0 upon its pivot D intoproper position, as is indicated in Fig. 7, which is particularlyintended to illustrate the application of this machine to a bearing inwhich the contact-points s s for the balls are in an element of a lowcone, as shown by dotted lines, connecting them in this figure, whilethe cup-wheel used for this purpose has its cutting-faces disposed atequal angles to its axis as therein shown. The lengthwise adjustment ofthe cup-wheel E by means of the hand-wheel b enables the wear of thiscup-wheel to be compensated by a single adjustment,since in operationthis wear is found to be equal upon both cutting planes of this wheel,and the angles at which the surfaces s s are ground do not change fromthe wear of the cup-wheel.

\Vhat I claim as new, and desire to secure by Letters Patent, is- 1. Ina machine for simultaneously grinding two surfaces, the combination witha work-support, of a wheel having two grinding-surfaces disposed atequal angles to the axis of rotation of said wheel, said wheel rotatingin a plane an gularly disposed relative to the plane of the work.

2. In a machine for simultaneously grinding two surfaces, thecombination with a rotating work-support, of a wheel having twogrinding-surfaces disposed at equal. angles to the axis of rotation ofsaid wheel, said wheel rotating in a plane angularly disposed relativeto the plane of rotation of the work.

In a machine for simultaneously grinding a plurality of surfaces, thecombination of a wheel having a plurality of grinding-surfaces disposedat different planes to the axis of rotation of said wheel, said wheelrotating in a plane angularly disposed relative to the plane of thework, and adjusting means for varying the angles of thegrinding-surfaces.

4. In a machine for simultaneously grinding two surfaces, thecombination with a rotating work-support, of a wheel having twogrinding-surfaces oppositely inclined relative to the axis of rotationof said wheel, said wheel rotating in a plane angularly disposedrelative to the plane of rotation of the work, the angles of inclinationof said grinding-surfaces to the axis of the wheel being equal.

5. In a machine for grinding two surfaces simultaneously, thecombination with a rotating work-support, of a cup-shaped wheel rotatingin a plane inclined relative to the plane of rotation of the work, saidwheel having its rim provided with two inclined grinding-surfaces.

6. In a machine for grinding two surfaces simultaneously, thecombination with a 1'0- tating work-support, of a cup-shaped wheelrotating in a plane inclined relative to the plane of rotation of thework, said wheel having its rim provided with two continuous inclinedgrinding-surfaces.

7. I11 a machine for grinding two surfaces simultaneously, thecombination with a 1'0- tating work-support, of a cup-shaped wheelhaving its rim provided with two continuous oppositely-inclinedgrinding-surfaces, said grinding-surfaces being inclined at equal anglesto the axis of rotation of said wheel.

8. In a machine for grinding bearings, the combination with awork-support, of agrinding-wheel having oppositely-inclinedgrinding-surfaces to dress the bearing simultaneously at two points andmeans for adjusting said grindingwheel angularly relative to the work.

9. In a machine for grinding bearings, the combination with awork-support, of a grinding-wheel having oppositely-inclinedgrinding-surfaees to dress the bearing simultane ously at two points,means for adjusting said grindin g-wheel an gularl y relativeto thework, and means for adjusting said grinding-wheel longitudinally of themachine to compensate for wear.

10. In a machine forgrinding ball-bearings, the combination with asuitable supportingframe, of a grinding-wheel for dressing the outersurface of the bearing mounted on said frame, a table mounted on saidsupporting-frame, a work-support carried by said table, a grinding-wheelfor dressing the inner surfaces of said bearing mounted on said table,and means for feeding said table and the instrumentalities mountedthereon past the first-named grinding-wheel.

11. In a machine for grinding bearings, the combination with astationarygrinding-wheel support, of a work-support, means for moving saidwork-support and work toward said grinding-wheel, and a secondgrinding-wheel in operative relation to said work-support and movabletherewith.

12. In a machine for grinding bearings, the combination with astationary adjustable grinding -wheel support, of an adjustablework-support, automatic means for moving said work-support and worktoward said grinding-wheel, a second grinding-wheel in operativerelation to said work-support, and movable therewith, and means foradjusting said second grinding-wheel angular-1y relative to the work.

13. In a machine for grinding the outer and inner surfaces of bearings,the combination with a stationary adjustable grinding-wheel support, ofa grinding-wheel for dressing the outer surface of the bearing mountedthere- I05 on, a table movable relative to said grindingwheel, awork-support adjustably mounted on said table, and a secondgrinding-wheel to dress the inner surfaces of the bearing adjustablymounted on said table.

14. In a machine for grinding the outer and inner surfaces of bearings,the combination with a stationary adjustable grinding-wheel support, ofa grinding-wheel for dressing the outer surface of the bearing mountedthere- II 5 in, a table movable relative to said grindingwheel, awork-support adjustably mounted on said table, a second grinding-wheelto dress the inner surfaces of the bearing adjustably, mounted on saidtable, said grinding-wheel having two grinding-surfaces to actsimultaneously on two bearing-surfaces, and automatic means for feedingsaid table and the instrumentalities carried thereby past thefirst-named grinding-wheel.

15. In a machine for grinding two surfaces simultaneously, thecombination with a suitable work-support, of a cup-shaped grindingwheelhaving a rim substantially V-shaped in cross-section.

16. In a machine for grinding two surfaces simultaneously, thecombination with a suitable work-support, of a cup-shaped grindingwhcelhaving a rim substantially V-shaped in eo'asoo cross-section, the sidesof said rim being inclined at equal angles to the longitudinal axis ofthe wheel.

17. In a machine for simultaneously grinding three surfaces, thecombination with a work-support, of grinding-Wheels mounted in angularrelation to said work, and means for adjusting said Wheels to vary theangles thereof relative to the work.

18. In a machine for simultaneously grinding three surfaces angularlydisposed relative to one another, the combination with a work-support,of a grinding-wheel adapted to dress two of said surfaces at the sametime, a second grinding-wheel to simultaneously dress the third surface,and means for giving an angular adjustment to said grindingwheelsrelative to the work.

19. In a machine for simultaneously grinding three surfaces angularlydisposed relative to one another, the combination with a rotatingwork-support, of a grinding-Wheel adapted to dress two of said surfacesat the same time, a second grinding-Wheel to sim ultaneously dressthethird surface, means for giving an angular adjustment to saidgrinding-wheels relative to the work, and means for moving the work pastsaid second grinding-wheel. v p

20. In a machine for grinding bearings, the combination of awork-holding support, pivoted to swing horizontally, so as to admitof V

